package com.foreknow.controller;

import com.sun.javafx.binding.StringFormatter;

import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

public class CookieDemo extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // 1. 创建一个cookie对象  Cookie只能保存小文本信息 存储容量为4k
        Cookie cookie = new Cookie("name","tom123");
        // 2. 设置cookie的有效时间(时间以秒为单位)
        // cookie.setMaxAge(1*30*24*60*60);
        // 3. 将cookie发送给客户端浏览器保存
        // resp.addCookie(cookie);

        // 如何获取到客户端的cookie信息
        PrintWriter out = resp.getWriter();
        Cookie[] cookies = req.getCookies();
        if (cookies!=null) {
            for (Cookie c:cookies) {
                String name = c.getName();
                String value = c.getValue();
                out.println(name+"----"+value);
            }
        }else {
            out.println("没有找到cookie数据！！！");
        }
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req,resp);
    }
}
